def commit(self, branch, actions, data=None):
if self.current_user is None:
raise LedgerException('No User Logged in')
branch = "refs/heads/%s" % branch
parent = ''
if branch in self.repo.refs:
parent = [self.repo.refs[branch]]
digest = hashlib.sha256(data).hexdigest()
ctime = int(time.time())
if isinstance(actions, list):
actions = ". ".join(actions)
s2s = Ledger.str_to_sign(ctime = ctime,
parent = parent,
digest = digest,
actions = actions,
user = repr(self.current_user))
ase = ASymEnc(self.current_user.key)
sig = ase.sign(s2s)
if not ase.verify(s2s, sig):
raise Exception('Bah!')
msg = "Actions: %s\nSig: %s\n%s" % (actions, sig, data)
commit = Commit()
commit.author = commit.committer = repr(self.current_user)
tzo = int(tzlocal().utcoffset(datetime.datetime.now()).total_seconds())
commit.commit_timezone = commit.author_timezone = tzo
commit.commit_time = commit.author_time = ctime
commit.encoding = "UTF-8"
commit.message = msg
# SHA of an empty tree
# git hash-object -t tree /dev/null
commit.tree = '4b825dc642cb6eb9a060e54bf8d69288fbee4904'
if parent:
commit.parents = parent
object_store = self.repo.object_store
object_store.add_object(commit)
self.repo.refs[branch] = commit.id
def walk_branch(self, branch, verify = True):
branch = "refs/heads/%s" % branch
if branch not in self.repo.refs:
return
for tx in self.repo.get_walker(include=self.repo.refs[branch]):
a = tx.commit.message.split('\n', 2)
actions = a[0]
sig = a[1]
data = a[2]
actions = actions.split(':')[1].strip()
sig = sig.split(':')[1].strip()
s2s = Ledger.str_to_sign(ctime = tx.commit.commit_time,
parent = ','.join(tx.commit.parents),
digest = hashlib.sha256(data).hexdigest(),
actions = actions,
user = tx.commit.author)
if verify:
user = self.cached_users[tx.commit.author]
asc = ASymEnc(user.key)
if not asc.verify(s2s, sig):
raise LedgerException("Commit %s has a bad sig" % tx.commit.id)
if data is None and -1 != tx.commit.message.find('Merge'):
continue
yield data, tx.commit
